The oxygen cycle involves the movement of oxygen between biotic and abiotic factors. How Does a Composting Toilet Work and 5 Best Composting Toilets Available on Amazon, 13 Excellent Examples of Natural Resources That Exist on Earth, Causes, Effects and Solutions of Ocean Acidification, Ecosystem – Components and Threats To an Ecosystem, 7 Continents of the World And Their Countries and Area Size, Why Do White Rabbits Have Red Eyes? Explain how the need for energy is the driving force of the oxygen cycle 2 See answers Brainly User Brainly User Plants leafs produce oxygen elements easy to human breathing source XSadness XSadness Hello. It is mostly utilized by living organisms, especially … Disclaimer Copyright, Share Your Knowledge The quantity of oxygen is 20.95% in the atmosphere which is maintained by oxygen cycle. Sonia Madaan is a writer and founding editor of science education blog EarthEclipse. Oxygen in the atmosphere is about 21%, and it is the second most abundant gas after nitrogen. Such free carbon dioxide is then released into the environment and is used by plants and planktons during photosynthesis to give out molecular atmospheric oxygen, thus completing the oxygen cycle. Oxygen Cycle Steps: Atmosphere: Only a small percentage of the world’s oxygen is present in the atmosphere, only about 0.35 %. (And Can They Choke on Raisins), Can Squirrels Eat Popcorn? Similarly, breathing apparatus are used by astronauts, mountaineers and scuba drivers. Her passion for science education drove her to start EarthEclipse with the sole objective of finding and sharing fun and interesting science facts. Sep 26,2020 - explain oxygen cycle? Photosynthesis produces the oxygen to replenish oxygen that is used up by living organisms during respiration. Explain Oxygen Cycle? Therefore, suffice is to say that oxygen enters organisms in the biosphere through respiration and is expelled through photosynthesis in a process that is interconnected with the carbon cycle plus the water cycle. The atmosphere, the total content of biological matter on the planet and the Earth’s crust are the three main reservoirs of oxygen. Free in the air and dissolved in water, oxygen is second only to nitrogen in abundance among uncombined elements in the atmosphere. (And Almond Butter), Natural and Man-Made Causes of Global Warming. Our mission is to provide an online platform to help students to share notes in Biology. As a result, oxygen is rapidly removed from the atmosphere. Privacy Policy3. During photosynthesis, plants and planktons use sunlight energy, water, and carbon dioxide to make food (carbohydrates) and release oxygen as a by-product. TOS4. When … The oxygen cycle is a biological process which helps in maintaining the oxygen level by moving through three main spheres of the earth which are: Atmosphere Lithosphere Biosphere. But it is said that the oxygen cycle is a perfect cycle in a state of dynamic equilibrium, in spite of anthropogenic activity that involves fossil fuel burning. About 20% of the Earth’s atmosphere is composed of molecular oxygen. Free in the air and dissolved in water, oxygen is second only to nitrogen in abundance among uncombined elements in the atmosphere. In its elemental form it is a colourless and odorless gas which cannot be used by plants or animals. Oxygen cycle an overview is given below. The released oxygen from the photosynthesis is transferred to the higher trophic levels as starch, sugar, and food carbohydrate. The earth's crust comprises land and water, which is the lithosphere. 1. plants use carbon dioxide, sunlight, and water to create energy. The oxygen cycle and the carbon dioxide cycle (carbon cycle) are two of the biogeochemical cycles on Earth that make life possible.They act separately but are dependent on each other because the carbon cycle gives off oxygen for the oxygen cycle to use, and in turn, the oxygen cycle emits carbon dioxide (CO 2) which goes back into the carbon cycle.. Plants are the main vehicle … C6 H12 O6 + 6O2 —–> 6 CO2 + 6 H2O + energy. Photolysis happens when the ultraviolet radiation of sunlight breaks apart oxygen-containing molecules such as nitrous oxide and atmospheric water to release free oxygen. Only a small fraction is present as free oxygen in the biosphere (0.01%) and atmosphere (0.49%). Oxygen occurs freely in the air, trapped in the earth crust as chemical compounds, or dissolved in water. (And Which Foods to Avoid), Can Squirrels Eat Raisins? 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